CN106186595A - A kind of technique using integral biological drip leaching processing equipment to process mud - Google Patents

Abstract

The invention provides a kind of technique using integral biological drip leaching processing equipment to process mud, described integral biological drip leaching processing equipment includes: two identical bioleaching reactors, blast aeration system, air diaphragms feed pump, barrier film filter press carry out squeezing, air compressor machine, waste collection pond, raw sewage processing system；Described technique includes: step 1, by pending mud dilute to about 98%；Step 2, two the bioleaching reactors containing specificity microorganism bacterium of mud entrance that will dilute, under the effect of blast aeration system, continuous aeration 36-48 hour；Step 3, reacted mud is pumped directly into barrier film filter press by air diaphragms feed pump squeezes；Step 4, the supernatant squeezed out in step 3 is flowed out to waste collection pond, enter raw sewage processing system, the outer operation resource reutilization of the high mass dryness fraction mud produced after squeezing；Step 5, circulation repeat step 1 to step 4.

Description

A kind of technique using integral biological drip leaching processing equipment to process mud

Technical field

The present invention relates to field of environment engineering, particularly relate to a kind of employing integral biological drip leaching and process The technique that equipment processes mud.

Background technology

The sludge organism technology of indication refers generally to process sewage disposal with microbial method the most both at home and abroad The activated sludge produced in journey.For in terms of specific resistance to filtration, traditional bioanalysis Refer to the mud of concentration utilizes specific microorganism (such as, some specific flora) detest Oxygen digests, and mud produces biogas under anaerobe effect.Presently used specific microorganism is general For acidophilic microbes, utilize specific acidophilic microbes, the heavy metal in mud can be removed, Harmful bacteria in mud is killed simultaneously.The most popular bioanalysis Treatment of Sludge skill The sweat (sludge composting technology) of art many fingers sludge composting, it is (bulk that mud adds allogenic material Agent, specific flora) after be commonly referred to as mud at aerobic microbiological effect bottom fermentation, these technology Biological dewatered technology.

Recent a kind of new technique of domestic appearance: bioleaching drying technique, refers to lead to thickened sludge Cross the multiple-microorganisms such as mushroom microorganism (such as, ferrous Thiobacillus, thiobacillus ferrooxidans etc.) good Act on mud in the case of oxygen, break the flocculent structure of mud, improve the settling property of mud, Thus the dewatering of this fouling mud, reach the obvious purpose of sludge dewatering effect, it is achieved mud Degree of depth mummification.

Mushroom microorganism (microbial composite bacteria) used by this technology is by the week of Agricultural University Of Nanjing Vertical auspicious professor finds, and the specificity microorganism after improvement, domestication.Municipal sewage plant Thickened sludge (aqueous about 96%) in inoculate above-mentioned special mushroom microorganism at specific bar (the about 40 hours) reaction through after a while under part, reaches the purpose that sludge quality changes, place Mud after reason can be concentrated to aqueous 92% with natural gravity, and volume reduces 2/3, leaching ability of heavy metal rate Reach more than 80%.Mud can be not added with any flocculant and be dehydrated to water content less than 60% through mechanism filter-pressing, Dewatered sludge generation amount reduces 2/3.In course of reaction, the foul smell of mud eliminates, and escherichia coli etc. have Bacterium of falling ill significantly is killed.And the organic matter in the mud after mummification is held essentially constant, remain dirt Beneficiating ingredient in mud, it is simple to follow-up recycling.The technique stream of this bioleaching drying technique Journey can be found in Fig. 1.The excess sludge of Treatment of Sludge factory enters sludge bioleaching pond through sludge concentration tank In, add special bacteria culture medium, via entering mudpan after sludge modification, supernatant enters Entering mixing pit, the pressing filtering liquid obtained by solid-liquid separation enters mixing pit, and the high mass dryness fraction obtained is dehydrated Mud transports outward disposal or in addition recycling further.Corresponding bioleaching method integration test sets Standby process chart is as in figure 2 it is shown, include air compressor, air accumulator, bioreactor, barrier film Feed pump, barrier film filter press, further pressure filtration yielding water or be press-filtered out mud cake.

Above-mentioned bioleaching drying technique has the drawback that: response time long (36-48 every time Hour), cause data acquisition relatively slow, greatly reduce work efficiency.

Summary of the invention

The technical problem to be solved is to provide at a kind of integral biological drip leaching processing equipment The technique of reason mud, to improve the efficiency of sludge bioleaching.

In order to solve the problems referred to above, the invention discloses a kind of employing integral biological drip leaching processing equipment The technique processing mud, described integral biological drip leaching processing equipment includes: two identical bioleachings Reactor, blast aeration system, air diaphragms feed pump, barrier film filter press carry out squeezing, pneumatics Machine, waste collection pond, raw sewage processing system, described air compressor machine provides gas for described blast aeration system Source and for described barrier film filter press provide power resources；

Described technique includes:

Step 1, by pending mud thinned water source diluting to about 98%；

Step 2, two lifes containing specificity microorganism bacterium of mud entrance that will dilute in described step 1 Thing drip leaching reactor, under the effect of blast aeration system, continuous aeration 36-48 hour；

Step 3, mud reacted in described step 2 is pumped directly into barrier film by air diaphragms feed pump Filter press squeezes；

Step 4, the supernatant squeezed out in described step 3 is flowed out to waste collection pond, enter former dirt Water treatment system, the outer operation resource reutilization of the high mass dryness fraction mud produced after squeezing；

Step 5, circulation repeating said steps 1 are to described step 4.

Preferably, described water source is tap water or middle water.

Preferably, described step 2 includes:

Use interim water pump to deliver in two bioleaching reactors in described mud after dilution, enter The sludge volume of two bioleaching reactors is equal or difference is less than pre-set threshold value, to described bioleaching What reactor added the oven-dry weight of described mud adds the ratio nutrient for 10-30%, two bioleachings The nutrient of reactor add than difference less than 2%.

Preferably, after described step 2, described method also includes:

Between when reacted more than 18 hours after, at interval of 4 hours, gather the described dirt in described step 2 Mud, uses pH meter to monitor the pH value of described mud, uses resistivity device taking out of described mud of detection to split Time.

Preferably, after described step 2, described method also includes:

When the pH value of described mud is less than 4.0, taking out of the described mud of 100 milliliters of moisture content 98% Described step 3 is performed when time of splitting was less than 180 seconds.

Compared with prior art, the present invention includes advantages below:

Compared with existing integration testing equipment, the Advantageous Effects of the present invention is as follows:

Two groups of bioleaching tests can be carried out simultaneously, owing to each bioleaching response time is longer, Increase a bioleaching reactor on the basis of originally, the Test Data Collecting time can be greatly shortened, Improve work efficiency, such as, if test uses a bioleaching reactor every time, take around 25 It time, if using 2 bioleaching reactors, only about need 13 days.

Accompanying drawing explanation

Fig. 1 is the process chart of the bioleaching drying technique of background technology；

Fig. 2 is the process chart of the bioleaching method integration testing equipment of background technology；

Fig. 3 is the technique using integral biological drip leaching processing equipment to process mud in the embodiment of the present invention Flow chart；

Fig. 4 be the embodiment of the present invention an example in use integral biological drip leaching processing equipment process The process chart of mud.

Detailed description of the invention

Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with The present invention is further detailed explanation for the drawings and specific embodiments.

See Fig. 3 and give employing integral biological drip leaching processing equipment process dirt in the embodiment of the present invention The process chart of mud.

Described integral biological drip leaching processing equipment includes: two identical bioleaching reactors, air blast Aerating system, air diaphragms feed pump, barrier film filter press carry out squeezing, air compressor machine, waste collection Pond, raw sewage processing system, described air compressor machine provides source of the gas for described blast aeration system and is described Barrier film filter press provides power resources.

Described technique includes:

Step 1, by pending mud thinned water source diluting to 97-98%.

In the embodiment of the present invention, it is preferable that described water source is tap water or middle water, middle water be treated with After can reach the sewage of certain reuse standard, in employing, water can play the effect of twice laid, saves Resource.

Step 2, two lifes containing specificity microorganism bacterium of mud entrance that will dilute in described step 1 Thing drip leaching reactor, under the effect of blast aeration system, continuous aeration 36-48 hour.

In the embodiment of the present invention, it is preferable that the excess sludge diluted in described step 2, enter two Bioleaching reactor, according to test requirements document, adds the nutrient of varying number, respectively in course of reaction In, gather two data simultaneously.

In the embodiment of the present invention, it is preferable that in described step 2, constantly monitoring bioleaching reactor Response situation, perform described step 3 when reaching requirement.

Step 3, mud reacted in described step 2 is pumped directly into barrier film by air diaphragms feed pump Filter press squeezes.

Step 4, the supernatant squeezed out in described step 3 is flowed out to waste collection pond, enter former dirt Water treatment system, the outer operation resource reutilization of the high mass dryness fraction mud produced after squeezing.

Step 5, circulation repeating said steps 1 are to described step 4.

Described step 2 includes:

In the embodiment of the present invention, it is preferable that use interim water pump to deliver into two in described mud after dilution In individual bioleaching reactor, the sludge volume of two bioleaching reactors of entrance is equal or difference is less than Preset difference value, adds the adding than for 10-30% of oven-dry weight of described mud to described bioleaching reactor Nutrient, the nutrient of two bioleaching reactors add than difference less than 2%.

Specifically, the excess sludge after dilution, moisture control, about 98%, uses interim water pump Deliver in two bioleaching reactors, enter sludge volume equalization, the root as far as possible of two reactors According to the oven-dry weight of the mud adding entrance reactor, calculate the weight of nutrient, nutrition according to different proportion The ratio that adds of agent controls between 10-30%, and the nutrient of two reactors adds and controls 2% than the poorest Left and right.

It is further preferred that in the embodiment of the present invention, it is preferable that after described step 2, described side Method also includes:

Between when reacted more than 18 hours after, at interval of 4 hours, gather in described step 2 was described Mud, uses pH meter to monitor the pH value of described mud, uses resistivity device to detect taking out of described mud Split the time.The effect of monitoring is the reaction effect in order to determine mud, when mud reaches intended reaction effect Time really, carry out sludge press filtration.

Further, after described step 2, when the pH value of described mud is less than 4.0, moisture content 98% 100 milliliters described mud take out the time of splitting less than 180 seconds time perform described step 3.

Compared with existing integration testing equipment, the Advantageous Effects of the present invention is as follows:

Two groups of bioleaching tests can be carried out simultaneously, owing to each bioleaching response time is longer, Increase a bioleaching reactor on the basis of originally, the Test Data Collecting time can be greatly shortened, Improve work efficiency, such as, if test uses a bioleaching reactor every time, take around 25 It time, if using 2 bioleaching reactors, only about need 13 days.

See Fig. 4 to give and an example of the embodiment of the present invention uses integral biological drip leaching process Equipment processes the process chart of mud.

By the mud mud thinned water source diluting after pending concentration to about 98%；After process Mud enter biological respinse drip leaching device 1 and biological respinse drip leaching device 2 after carry out biological respinse drip leaching Reaction, wherein, by blast aeration system continuous aeration 36-48 hour, wherein, passes through air compressor machine It is connected with the aeration tube of biological respinse drip leaching device inner draft tube, improves source of the gas for reactor blast aeration.

Further reacted mud is pumped directly into barrier film filter press by air diaphragms feed pump Squeeze.Wherein, enter dredge pump by the barrier film of air compressor machine with barrier film filter press and be connected, every Film filter press is entered mud and is entered by the mud that air diaphragms feed pump conveying bioleaching is completely reacted Barrier film filter press, entering mud for barrier film filter press provides power resources；Air compressor machine also with every The squeezing air inlet pipe of film filter press is connected, and after barrier film filter press enters mud, uses Mud in barrier film filter press is squeezed by pressure-air, squeezes for barrier film filter press Power resources are provided.

The supernatant squeezed out flows out to waste collection pond, enters raw sewage processing system, after squeezing The high mass dryness fraction mud produced, that is to say mud cake, further outer operation resource reutilization.Further, on State step can also circulate further and repeat.

This integrated technology equipment is the excess sludge using sewage treatment plant to produce, this moisture percentage in sewage sludge It is about 98%, microbe inoculation in this mud, and add the nutrient needed for microorganism, make Bioleaching reaction keeps seriality, and mud stops 36-48 hour in biology drips tight reactor After, reach treatment effect, by air diaphragms transport pump to filter press, typically enter mud 2 little Time, squeeze 1.5 hours, i.e. can reach preferable Treatment of Sludge effect.

For embodiment of the method, in order to be briefly described, therefore it is all expressed as a series of action group Closing, but those skilled in the art should know, the present invention is not by described sequence of movement Limiting, because according to the present invention, some step can use other orders or carry out simultaneously.Its Secondary, those skilled in the art also should know, embodiment described in this description belongs to preferably Embodiment, necessary to involved action and the parts not necessarily present invention.

A kind of integral biological drip leaching processing equipment is used to process mud to provided by the present invention above Technique is described in detail, and specific case used herein is to the principle of the present invention and embodiment Being set forth, the explanation of above example is only intended to help to understand method and the core thereof of the present invention Thought is thought；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, at tool All will change on body embodiment and range of application, in sum, this specification content is not It is interpreted as limitation of the present invention.

Claims (5)

1. one kind uses the technique that integral biological drip leaching processing equipment processes mud, it is characterised in that Described integral biological drip leaching processing equipment includes: two identical bioleaching reactors, blast aerations System, air diaphragms feed pump, barrier film filter press carry out squeezing, air compressor machine, waste collection pond, Raw sewage processing system, described air compressor machine provides source of the gas for described blast aeration system and is described barrier film Filter press provides power resources；

Described technique includes:

Step 1, by pending mud thinned water source diluting to about 98%；

Step 2, two lifes containing specificity microorganism bacterium of mud entrance that will dilute in described step 1 Thing drip leaching reactor, under the effect of blast aeration system, continuous aeration 36-48 hour；

Step 3, mud reacted in described step 2 is pumped directly into barrier film by air diaphragms feed pump Filter press squeezes；

Step 4, the supernatant squeezed out in described step 3 is flowed out to waste collection pond, enter former dirt Water treatment system, the outer operation resource reutilization of the high mass dryness fraction mud produced after squeezing；

Step 5, circulation repeating said steps 1 are to described step 4.

Technique the most according to claim 1, it is characterised in that described water source be tap water or in Water.

Technique the most according to claim 1, it is characterised in that described step 2 includes:

Use interim water pump to deliver in two bioleaching reactors in described mud after dilution, enter The sludge volume of two bioleaching reactors is equal or difference is less than pre-set threshold value, to described bioleaching What reactor added the oven-dry weight of described mud adds the ratio nutrient for 10-30%, two bioleachings The nutrient of reactor add than difference less than 2%.

Technique the most according to claim 1, it is characterised in that after described step 2, institute Method of stating also includes:

Between when reacted more than 18 hours after, at interval of 4 hours, gather the described dirt in described step 2 Mud, uses pH meter to monitor the pH value of described mud, uses resistivity device taking out of described mud of detection to split Time.

Technique the most according to claim 4, it is characterised in that after described step 2, institute Method of stating also includes:

When the pH value of described mud is less than 4.0, taking out of the described mud of 100 milliliters of moisture content 98% Described step 3 is performed when time of splitting was less than 180 seconds.